Answer:
Osteons are cylindrical structures that contain a mineral matrix and living osteocytes connected by canaliculi, which transport blood. They are aligned parallel to the long axis of the bone. Each osteon consists of lamellae, which are layers of the compact matrix that surround a central canal called the Haversian canal.
Some are outdated because people make new words
Answer:
Physical, mental, social, and mental health are interrelated with one another.
I believe the answer would be d.muscle cramps. Breathing in toxins seems like it could relate to the other three answers.